A device for monitoring and indicating a fuse tube detachment from a fuse cutout assembly contains a structural body, a tilt switch, a power source, a visual indicator, and an attachment mechanism. The attachment mechanism is used to mount the device onto the fuse tube. The tilt switch monitors the position of the fuse tube. More specifically, when the vertical position of the fuse tube changes to the dropped position the tilt switch is triggered. Thus, the visual indicator is illuminated. The illumination aids in the process of discovering the detached fuse tube. In addition to the visual indicator, the device can also be equipped with a wireless communication device and an alarm system. The wireless communication device can be used to provide the exact location of the detached fuse tube. On the other hand, the alarm system can be used to expedite the process of discovering the detached fuse tube.

Provided is an acceleration sensor having a large mass in a movable portion, and realizing high impact resistance. An acceleration sensor element 10a includes an upper substrate 20, a lower substrate 21 spaced apart from the upper substrate 20, and an intermediate substrate 19 provided between the upper substrate 20 and the lower substrate 21. Each of a first movable portion 16, a second movable portion 17, a frame portion 12, a fixed portion 13, and a spring portion 14 constituting the intermediate substrate 19 is configured with two layers of an upper layer and a lower layer, and a stopper portion 18 is provided at one end of the frame portion 12. A distance 31 between an end portion of the first movable portion 16 or the second movable portion 17 and an end portion of the stopper portion 18 in the upper layer and a distance 32 between an end portion of the first movable portion 16 or the second movable portion 17 and an end portion of the stopper portion 18 in the lower layer are different from each other.

The present invention relates to an auxiliary relay for an electromagnetic contactor, the relay including magnet members provided on both sides of a moving member, and first and second conductive members provided on both sides of a frame, whereby an ON or OFF state of the first and second conductive members can be controlled according to the magnet members, in response to a movement of the moving member, so as to configure various contact circuits, such as 1a 1b contact circuit, 2a contact circuit, 2b contact circuit and the like, for the electromagnetic contactor.

A power supply coupling circuit may include at least one reed switch connecting a power supply with a load and disposed within an electronic device. A predetermined arrangement of one or more external magnets may be required to open the at least one reed switch to disconnect the power supply from the load.

The disclosure provides a non-contact switch device for use on material handling equipment, including a reed switch and a magnet, wherein the non-contact switch device has on and off positions achieved by the presence or absence of magnetic induction between the magnet and the reed switch. The non-contact switch devices are disclosed in the form of a main power switch, an interlock switch, a limit switch.

The disclosure provides a non-contact switch device for use on material handling equipment, including a reed switch and a magnet, wherein the non-contact switch device has on and off positions achieved by the presence or absence of magnetic induction between the magnet and the reed switch. The non-contact switch devices are disclosed in the form of a main power switch, an interlock switch, a limit switch.

A sensor assembly as part of a wireless alarm system for building entrances like windows and doors. An elongated sensor assembly for detecting a change of state comprising at least one sensor switch configured to detect a given state and a change of state between the given state and at least one other state, a microprocessor configured to detect the change of state of the at least one sensor switch, an antenna system, a wireless transmitter configured to receive a signal from the microprocessor identifying a change of the state of the at least one sensor switch and transmit the signal by means of the antenna system, and a power source for providing electric power, wherein the at least one sensor switch, the microprocessor, the antenna system, the wireless transmitter, and the power source are incorporated in the elongated sensor assembly having a maximum height of less than 5 mm.

Disclosed herein are electronic devices with a sensor configured to breakaway from an input button or input/output interface. In one example, the electronic device includes a button positioned within an opening of a chassis or housing. A sensor is in communication with the button, wherein the button is configured to contact the sensor in a first sensor position upon application of an activation force. At least one magnet is configured to retain the sensor in the first sensor position by a frictional or magnetic force. Additionally, the sensor is configured to move from the first sensor position to a second sensor position upon application of a force greater than the frictional or magnetic force and less than a sensor damage force. The activation force is less than the frictional or magnetic force, which is less than the sensor damage force.

Disclosed herein are electronic devices with a sensor configured to breakaway from an input button or input/output interface. In one example, the electronic device includes a button positioned within an opening of a chassis or housing. A sensor is in communication with the button, wherein the button is configured to contact the sensor in a first sensor position upon application of an activation force. At least one magnet is configured to retain the sensor in the first sensor position by a frictional or magnetic force. Additionally, the sensor is configured to move from the first sensor position to a second sensor position upon application of a force greater than the frictional or magnetic force and less than a sensor damage force. The activation force is less than the frictional or magnetic force, which is less than the sensor damage force.

A system for enabling and disabling a medical device. The system includes a cradle having a magnet for generating a magnetic field. The cradle supports and aligns the medical device in a predetermined orientation. Medical device placed in the cradle exposes a magnetic sensitive switch to the magnetic field of the magnet that produces a change in state of the magnetic sensitive switch. Medical device further includes a switch, indicator, logic circuitry, delay circuit, and detect circuit for coupling a power source to electronic circuitry. In a first mode of operation the medical device can be turned on and then turned off. In a second mode of operation the medical device cannot be turned off after being turned on.